Elevator door control apparatus

Details Elevator door control apparatus Elevator door control apparatus

1996-12-16

1999-01-26

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

49 28, B66B 1314

Patent

active

058641041

ABSTRACT:
An elevator door control apparatus according to the present invention includes a driver for driving an elevator door; a torque detector, connected to the driver, for detecting torque command values during driving and the maximum torque command value; a standard door memory; an optimal door speed calculator for calculating an optimal door speed from the standard door values stored in memory and from the torque command values detected by the torque detector; and a door speed command for outputting a speed command signal to the driver, based on the door speed calculated by the optimal door speed calculator.

REFERENCES:
patent: 5162711 (1992-01-01), Heckler
patent: 5274312 (1993-12-01), Gerstenkorn
patent: 5378861 (1995-01-01), Barten et al.
patent: 5587565 (1996-12-01), Schroder-Brunloop et al.
patent: 5625175 (1997-04-01), Gutknecht et al.

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